[alsa-devel] [PATCH] ALSA: hda: Add speaker pin to automute Acer Aspire 8943G

Valentine Sinitsyn valentine.sinitsyn at gmail.com
Thu Oct 14 08:13:56 CEST 2010

Hi David,

First of all, thank you for your work on subwoofer issues. I've had a 
chance to test them on my system lately, and they do really fix the bug 
reported, but another one (more serious, in my opinion) remains: 
subwoofer is not muted via normal mute button (more precisely, by muting 
Master ALSA mixer). The problem is that during autoconfiguration 
procedure, subwoofer is mapped on PCM channel, and there seems (at least 
to me) to be no reliable way to distinguish subwoofer from other 
possibly existing outputs on a general system and change this behavior. 
Creating dedicated presets for the machines with a subwoofer seems to be 
right way to workaround this, but then _quirks you've implemented should 
be merged with this preset.

Does this sound reasonable to you or I am missing anything?


Valentine Sinitsyn

More information about the Alsa-devel mailing list